Trying to help a friend out. He wants to swap out the dust cover on his Norinco AR but the barrel nut won't break loose. Anyone else had a similar problem or solution? He does have the upper receiver bench block, barrel wrench and was using a vise but it still won't come loose. Wondering if they lock tited the damn thing?? I suggested heating it up with a hair dryer but that's all I could think of.
Thanks.
Thanks.


















































